Change project structure;

Added new c# binding;
2025-12-30 20:54:05 +09:00
parent 5f5404268c
commit f1d3dddb9a
392 changed files with 2694 additions and 360462 deletions
--- a/native/header/Algorithm/Sobol.h
+++ b/native/header/Algorithm/Sobol.h
@@ -0,0 +1,83 @@
+#ifndef SOBOL_H
+#define SOBOL_H
+
+#include "Common.h"
+#include <stdint.h>
+
+#define SOBOL_BITS 32
+// NOTE: May need more dimensions for later, most of commercial renderer use more than 1000 dimensions
+#define SOBOL_DIMENSIONS 36
+
+typedef enum
+{
+    PRNG_FILTER_U = 0,
+    PRNG_FILTER_V = 1,
+    PRNG_LENS_U = 2,
+    PRNG_LENS_V = 3,
+    PRNG_BASE_NUM = 4,
+
+    PRNG_BSDF_U = 0,
+    PRNG_BSDF_V = 1,
+    PRNG_BSDF = 2,
+    PRNG_LIGHT = 3,
+    PRNG_LIGHT_U = 4,
+    PRNG_LIGHT_V = 5,
+    PRNG_LIGHT_F = 6,
+    PRNG_TERMINATE = 7,
+    PRNG_BOUNCE_NUM = 8
+} sampling_dimension_t;
+
+static uint32_t sobol_direction_vectors[SOBOL_DIMENSIONS][SOBOL_BITS];
+
+// Precomputed table: s, a, and m_i's
+// https://web.maths.unsw.edu.au/~fkuo/sobol/
+static int s_vals[SOBOL_DIMENSIONS - 1] = {1, 2, 3, 3, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6,
+    6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7};
+
+static uint32_t a_vals[SOBOL_DIMENSIONS - 1] = {0, 1, 1, 2, 1, 4, 2, 4, 7, 11, 13, 14, 1, 13, 16, 19,
+    22, 25, 1, 4, 7, 8, 14, 19, 21, 28, 31, 32, 37, 41, 42, 50, 55, 56, 59};
+
+static uint32_t m_vals[SOBOL_DIMENSIONS - 1][7] = {
+    {1},
+    {1, 3},
+    {1, 3, 1},
+    {1, 1, 1},
+    {1, 1, 3, 3},
+    {1 ,1, 5, 13},
+    {1, 1, 5, 5, 17},
+    {1, 1, 5, 5, 5},
+    {1, 1, 7, 11, 19},
+    {1, 1, 5, 1, 1},
+    {1, 1, 1, 3, 11},
+    {1, 3, 5, 5, 31},
+    {1, 3, 3, 9, 7, 49},
+    {1, 1, 1, 15, 21, 21},
+    {1, 3, 1, 13, 27, 49},
+    {1, 1, 1, 15, 7, 5},
+    {1, 3, 1, 15, 13, 25},
+    {1, 1, 5, 5, 19, 61},
+    {1, 3, 7, 11, 23, 15, 103},
+    {1, 3, 7, 13, 13, 15, 69},
+    {1, 1, 3, 13, 7, 35, 63},
+    {1, 3, 5, 9, 1, 25, 53},
+    {1, 3, 1, 13, 9, 35, 107},
+    {1, 3, 1, 5, 27, 61, 31},
+    {1, 1, 5, 11, 19, 41, 61},
+    {1, 3, 5, 3, 3, 13, 69},
+    {1, 1, 7, 13, 1, 19, 1},
+    {1, 3, 7, 5, 13, 19, 59},
+    {1, 1, 3, 9, 25, 29, 41},
+    {1, 3, 5, 13, 23, 1, 55},
+    {1, 3, 7, 3, 13, 59, 17},
+    {1, 3, 1, 3, 5, 53, 69},
+    {1, 1, 5, 5, 23, 33, 13},
+    {1, 1, 7, 7, 1, 61, 123},
+    {1, 1, 7, 9, 13, 61, 49}
+};
+
+void sobol_init();
+uint16_t sobol_get_dimension(uint16_t bounce, sampling_dimension_t operation_type);
+float sobol_sample(uint32_t index, uint16_t dimension);
+float sobol_sample_scrambled(uint32_t index, uint16_t dimension, uint32_t scramble);
+
+#endif // SOBOL_H